IEEE Std 802.3bt-2018 pdf download – IEEE Standard for Ethernet Amendment 2: Physical Layer and Management Parameters for Power over Ethernet over 4 Pairs.
1.4.453a single -signature PD: A PD that simultaneously shares the same detection signature, class signature, and maintain power signature between both pairsets. (See IEEE Std 802.3, Clause 145.) Change 1.4.488, 1.4.489, 1.4.490, and 1.4.491 as follows: .1.4.488 Type 1 PD: A PD that provides a Class0, 1, 2, of 3 signature requests Class 0 to Class 3 _during Physical Layer classification, and that is not a PoDL PD. (See IEEE Std 802.3, Clause 33.) 1.4.489 Type 1 PSE: A PSE that supports- only t Type + PD. Class 0 to Class 3 power levels and provides power over 2 pairs. (See IEEE Std _802.3, Clause 33.) 1.4.490 Type2 PD: A PD that- provides- t Class 4 signature during- Physieal Layer- eassifieation, tnderstands- 2 Event elassifieation, and is eapable of Data Link Layer elassifieation requests Class 4 during Physical L ayer classification. supports 2-Event Classification. and supports Data Link Layer classification. (See IEEE Std _802.3, Clause 33.) 1.4.491 Type 2 PSE: A PSE that supports- botha Type + andta Type 2 D. Class 0 to Class 4 power levels and provides power over 2 pairs. (See IEEE Std 802.3, Clause 33.) Insert the following new terms and definitions, 1.4.491a to 1.4.491d, after 1.4.491“Type 2 PSE”: 1.4.491a Type3 PD: A single-signature PD that requests Class 1 to Class 6, or a dual-signature PD that requests Class 1 to Class4 on both Modes, during Physical Layer classifcation. Additionally, the PD implements Multiple-Event classification and accepts power on both Modes simultaneously. (See IEEE Std 802.3, Clause 145.)
30.9.1.1 .5b aPSEPowerDetectionStatusB ATTRIBUTE APPROPRIATE SYNTAX: An ENUMERATED VALUE that has one of the following entries: searchingAltB PSE searching deliveringPowerAltB PSE delivering power faultAltB PSE fault detected BEHAV IOUR DEFINED AS: A read-only value that indicates the current status of the PD Detection function specified in 145.2.6. The enumeration“deliveringPowerAltB” indi cates that the PSE State diagram is in the state POWER_ ON_ SECifalt_ pri=’a’ or the state POWER_ ON_ PRI ifalt_ pri=’b’. The enumeration “faultAltB”indicates that the PSE State diagram is in the state IDLE_ SEC ifalt_ pri=*’a’ or the state IDLE_ PRI if alt_ pri=’b’ due to the variable error_ condition_ sec = TRUE (ifalt_ pri=*a) or error_ condition_ pri = TRUE (ifalt_ pri=’b”). The enumeration“searchingAltB”indicates the PSE State diagram is in a state other than those listed above. NOTE- A derivative atribute may wish to apply a delay to the use of the“deliveringPowerAltB” enumeration as the PSE state diagram will enter and then quickly exit the POWER_ ON SEC (if alt_ pri=’a’) state or the POWER_ _ON_ PRI (if alt_ prit *b’) state if a short-circuit or overcurrent condition is present when power is first applied;